Speaking to the group of analysts in January 2006, a brokerage firm executive claimed that at least 70% of investors are currently confident of meeting their investment objectives. A UBS Investor Optimism Survey, conducted over period January 2 to January 15, found that 67% of investors were confident of meeting their investment objectives (CNBC, January 20, 2006). There are 300 executives.
At a= .05, should the executive's claim be rejected?